Art of filtration



- Nov. 20,1923. l

H'. F. GLAIR ET AL' ART OFFILTRATION Filed Aug. 11. 1929 5 Shets-S h eet1 Nov. 20 1923.

' 1,474,899 H. F. GLAIR-ET AL ART oFf FIL'lRATION Filed Aug. 11. 1920' 5sheets -shget 2 flush 71' Er gIG'QanS v dward Nov. 20,1923.

H. F. GLAIR ET AL ART OF FILTRATION Filed Aug. 11 1920 5 Sheets-Sheet 3I 9% Ca -2 Nov. 20 1923.

v 11,474,89 H.. F. GLAIR ET AL ART OF FILTRATION Filed Aug. 11, 1920 5Shec s-Sheet 4 9 9 y m A 1 L A T E m A L G E H" Nov. 20 1923.

ART OF FILTRATION Filed Aug. 11

, 1920 5 Sheets-Sheet 5 Patented Nov. 26, 1923.;

time

i rat.

HARRY F. GLAIR AND EDWARD J. WONNACOTT, F ITING, INDIANA, ASSEGNORS TOsrTANnANn orn COMPANY or INDIANA.

T 0F FILTRATION.

Application filed August 11, 1920. Serial No. 1 02309.

To all whom it may concern:

Be it known that we, HARRY F. Gram arid EDWARD J. WONNAOOT1, citizens ofthe United States, residing at Whiting, in the county of Lake and Stateof Indiana, have invented a new and useful Improvement in the Art ofFiltration, of which the followin is a specification.

he present invention relates to the art of filtration, and moreparticularly to the filtration of parafiine wax or other wax or at theother, to which pressure is applied f fusible substance from chilled oilor other vehicle. It will be fully understood from the followingdescription thereof, villustrated by the accompanying drawing, in which:

Figure 1 is an elevation of a filter press adapted for use in connectionwith the present invention, certain of the detailed elements ofconstruction not being shown therein;

Figure 2 is an elevation of the end portion of a filter press, showing aconstruction adapted for use in connection with the present invention;

, Figure 3 is a transverse section through the press shown in Figure 2,one of the filter faces being shown in elevation, and partially brokenaway Figure 4 is a detail elevation of a ring provided with a heatingelement used in connection with the present invention, and showing themeans of its connection with the manifolds supplying the heating mediumand its support within the filter press;

Figure 5 is a detailed view showing the arrangement of manifolds for theheating medium; and,

-- Fi ure" 6 is a vertical sectional view on the line 6-6 of Figure 3,through the filter.

press plates.

Referring more particularly to the drawings, the numeral 10 indicates afilter press resting upon a suitable floor or foundation 11 and providedwitha stationary standard 12 at one'end and a movable end plate 13 bymeans of a suitable device, for example, the hydraulic press 14. Themovable end plate as well as the various plates and elements making upthe filter press construction are supported vertically'upon the lonitudinally extending rails 15.

'i he filter press body is made up of a series of filter members, eachof which comprlses two filtering surfaces with a space etween from whichfiltered material is (or INDIANA), or mine, time, a ooNronia'rIoN idrained, alternating with separating rings forming spaces into which theoil to be filtered is introduced and in which the wax IS-dGPOSltGd. Asshown most clearly in Figs. and 6, the filter sup, orting memberscomprise a r1ng 16, provi ed at each side with a projection 17 by whichit is supported upon the rails 15, 15 and upon each side of the ring 16is attached a perforated metal disc 18, having in perforated edges andprovided centrally with enlarged aligned openings. The" filters,consisting of heavy canvas or duck cloths 19, 19 are supported upon themetal plates 18, 18, the

filter cloths upon the two Sides of the supportformed by these platesbeing sewed together at intervals around the outer edges of thering, asshown at 20, and likewise within the openings in the metal plate 18asindicated at 21. The central openings in the filter cloths permitfreepassage of oil through the device, the sewing together of the clotharound the central opening, as indicated at 21, preventing admission ofunfiltered oil into the space 22 between the filters within the'ring 16.Each bf the rings 16' is provided with a suitable drain age opening 23,through which filtered oil may flow out of the space 22 within the rin16.

he respective filter bodies formed by the rings 16, the perforated metalsupport 18 and the filters 19 are spaced apart by rings 24, likewisemounted upon the rails 15 by means of suitablelateral projections 25,25. The use of these rings 24 provides spaces 26,26 between the oppositefilter faces of successiv'e filter'plates, into which spaces the oil mayfreely'flow as hereinafter described, and in which spaces the filteredwax is deposited upon the surfaces of the filters 19,

- openings drilled in the rings 24 and being bent as indicated at 28into suitable position for convenient connection with manifolds by whichheating and cooling media mafi'be supplied.

order to supply and remove the heat- I ing or coolin headers 29 and 31,31 branch off from the medium the manifolds or 30 extend longitudinallyof the press above and below it respectively. At regularly spacedintervals, sub-headers main headers 29 and 30 and extend parallelthereto.

These sub-headers 31, 31, are provided with nipples 32, from whichCOIIIIGGtlOII IS made to the curved portions 28 of the coils 27 outsideof the ring 24, for example, by means of suitable flexible connectors33, 33. The manifolds 28 and the sub-headers and connections therewithserve for the supply of the heating or cooling. medium, and the lowerheader 30 withits various connections serves for the withdrawal orremoval of the heating or cooling medium.

Removal of wax and oil after these materials'have passed. out of'thefilter press is effected by the means most clearly indicated in Figure3. A well is formed below the filter press, in which are provided twoadjacent longitudinally extendin troughs 34 and 35, the former of whichserves for conveying away filtered oil and the latter for conveying awaythe slack wax filtered from the oil in the press. To facilitate thisremoval, the trough 35 may be suitably provided with a screw conveyor36. The filtered oil passing out of the trough 34 is conveyed awaythrough the pipe 37. Longitudinally extending inclined plates 38, 38below the filter press serve to guide the oil or wax passing out of thepress, as the case may be, to the movable angular deflector 39, by whichthe material is guided to the proper trough. This angular deflector 39is pivoted at 40, and has two angularly dis osed sections 41 and 42, theformer of whlch serves, when in the position indicated in full lines inFigure 3, to guide the material coming from the pressinto the trough 34,and the latter, when in the position shown in dotted lines in Figure 3,to guide the material coming from the filter press into the wax trough35. The movable deflector 39 is operated by means of cables 43, whichare attached'to the longitudinally extending rotatable shaft 44 operableby crank 45.

.In operation, chilled oil containing the parafline Wax in suspension isconveyed into the filter press through the supply pipe 46. It enters andfills the press, passing through the central openings through the filtercloths 19, and filling the spaces 26, 26 throughout the press betweenthe filter plates. The oil is forced through the filter cloths 19 intothe spaces 22 betweep them, the cloths being supported substantiallyuniformly over their entire surfaces b the plates 18, and

the pressure or head o the oil over the filtering surfaces beinapproximately the same at all points. mm the spaces 22 the filtered oildrains through the openings 23 out of the press, being guided by theplates 38, 38 and the deflector 39 into the oil trou h 34. The waxfiltered out from the --oil eposits in the spaces 26, 26 between thefilter plates. As soon as these spaces become substantially filled withslack wax the supply of chilled oil is cut off. Steam is then ad mittedinto the header 29 through a-suitable cock controlling the same, fromwhich it drawn through the header 30. After the wax has been removedfrom the press, chilled oil may be immediately introduced as in themanner above described, in which case the oil which is initially passedthrough and which serves to chill the press must be again chilled andpassed through the press, or the press may be initially cooled bypassing cold oil preferably filtered, through the header 29, the coils27 and out through the header 30 before introducing the chilled oil forfil-' tration through the main pipe 46.

Although the present invention has been described in connection with aspecific example of its operation and 'aconstruction capable of carryingout the same, it is not intended that the details set forth shall beregarded as limitations onthe sco e of the invention except in so far asinclu ed in the acompanying claims.

e claim: 1. In apparatus for filterin chilled oil, in combination, alter surface,

means for uniformly supporting said sur-.

face, means for forcin chilled oil through steam and condensatetherefrom are with-' waxv from said surface, thereby epositing wax thereupon, and heating means adjacent the filter surface and upon the sideopposite the support thereof forapplying heat to the wax depositedthereupon. 2. In wax filtering apparatus, a filtering septum, a confinedchamber on each side thereof, means for supplying chilled oil into oneof said' chambers, means forj'withdrawing filtered oil from the other ofsaid' chambers, a coil in the first of said chambers in proximity to thefiltering septum, and means for supplying heating or .cooling media tosaidcoil.

3. In wax filtering apparatus, a plurality of spaced uniformly suportedfiltering septa, means for forcing chilled oil' into the alter- 'natechambers or spacesbetwe'en said septa,

means for withdrawing filtered oil from the others of said chambers,coils in the chamfilter plates, each comprlsing spaced filters andmearis 'for uniformly supporting said filters, means for removing oilfrom the .spaces within said filte'r plates between said filters,spacing rings between said filter plates forming wax spaces, coilswithin said rings substantially parallel to the filters, means forintroducing: heating or cooling media into said coils, and means forintroducing chilled oil into said waxspaces.

5. In a filter press, a plurality of aligned filter plates eachcomprising spaced filters ,see

and means for uniformly supporting said filters, means for removing oilfrom the spaces within said filter plates between said filters, spacingrings between said filter plates forming wax spaces, coils within saidrings substantially parallel to the filters, means for introducingheating or cooling media in said coils, said coils being provided withprojecting inlets and outlets,

headers connected respectively with said inlets and outlets wherebyheating or cooling media may be introduced into and withdrawnfromthe'coils, and means for introducing oil-into the wax spaces.

HARRY FQ GLAIR. q

EDWD J. WONNACOTT.

